Examples from sci-fi of voice interfaces that stay on task

I wonder how you would design a really single-minded voice UI? Like, voice interfaces are really good now because of AI. But they’re so unbounded. If you’re having a voice interaction with a computer or with a device, you could end up having a conversation about anything. And while a voice UI is great within a domain, do you really want to be gossiping about movies or having a psychotherapy session with your fridge? I mean, at that point what even is a product? i.e. how would you have a single purpose Alexa? So I’ve been spelunking Technovelgy for things that speak but only in a limited domain. (Technovelgy is a database of over 4,000 inventions from sci-fi.) Like this ATM that discourages long convos: He headed for the ATM in the back… he knew it was watching him as he walked up to it. “Identify yourself, please.” Lucky Dragon ATMs all had this same voice, a weird, uptight, strangled little castrato voice … probably kept people from standing around, [talking] with it… – All…